Preprioceptive

It should be noted that these are errors in direction, of knowing whether the eye had turned left or right. Nothing is said about the usefulness of preprioceptive feedback in telling the eye which exact point in space it is looking at.

Eckmiller [2] has shown through his experiment that human subjects undergo poor performance in accurately locating 3D points by hand without visual feedback, even though kinesthetic and preprioceptive feedbacks are present.

This sensory output from the integumental surfaces and viscera may substitute for the normal gravity preprioceptive sensor outpourings; subject training by artificial re-enforcement of skin pressure clues may offer an adequate solution.